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List:       imap
Subject:    Re: [Imap-protocol] off-topic:  stats on mail duplication,	mailing
From:       Tony Finch <dot () dotat ! at>
Date:       2009-07-13 11:11:23
Message-ID: alpine.LSU.2.00.0907131151110.30197 () hermes-2 ! csi ! cam ! ac ! uk
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On Sun, 12 Jul 2009, Bill Janssen wrote:
>
> I'm interested in figuring some strawman stats about email duplication
> that could be addressed by a site-wide IMAP server. For example, how
> many mailing lists an "average" organization has; the average number of
> users per mailing list; the average message traffic (in both messages
> and bytes) per day, per week, per year.

We have an average of two recipients per message. This underestimates the
amount of de-duplication that you could do, because large mailing lists
are split up into multiple messages, and I don't have any stats that would
allow me to say anything about duplicate forwarded attachments.

Message traffic averages 10 messages per user per day and about 1Mbyte per
user per day (in both cases ignoring multi-recipient messages). Number of
messages isn't increasing much, but message size is going up by about
12.5% per annum.

I work for Cambridge University. We have quite a skewed user base - I
expect if I had stats covering just staff the numbers would be rather
higher, plus I don't have any stats on traffic inside departmental
Exchange servers such as the one used by about 1000 administrative staff.

Tony.
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
GERMAN BIGHT HUMBER: SOUTHWEST 5 TO 7. MODERATE OR ROUGH. SQUALLY SHOWERS.
MODERATE OR GOOD.
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